CVE-2026-2944 Tosei Online Store Management System ネット店舗管理システム HTTP POST Request monitor.php system os command injection

Medium 6.9 Published 22 Feb 2026 Updated 25 Feb 2026

Remote attackers can execute arbitrary OS commands via the DevId argument in monitor.php of the Tosei Online Store Management System.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-2944?

CVE-2026-2944 is a medium-severity command injection vulnerability in Tosei Online Store Management System ネット店舗管理システム, published on 22 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A security flaw has been discovered in Tosei Online Store Management System ネット店舗管理システム 1.01. Affected is the function system of the file /cgi-bin/monitor.php of the component HTTP POST Request Handler. Performing a manipulation of the argument DevId results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2026-2944?

It affects 1 product.

Products include Tosei-Corporation Online Store Management System.

How do I fix CVE-2026-2944?

No fix has been published for CVE-2026-2944 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-2944 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2944 exists.

Sources

Also known as GHSA-wh45-rv58-w5rc.